Hyperpolarizing shift of the M-current activation curve after washout of muscarine in bullfrog sympathetic neurons.

Abstract:

:The mechanism underlying the over-recovery of an M-type potassium current following the washout of muscarine (20 microM) has been examined. Whole-cell recordings were made from single neurons dissociated from bullfrog sympathetic ganglia. During over-recovery, the maximum M-conductance decreased by about 2.8 nS while the steady-state M-current activation curve was displaced in the hyperpolarizing direction by about 13 mV. These data suggest that a hyperpolarizing shift in the kinetics of M-current causes over-recovery in amphibian autonomic neurons.

journal_name

Neurosci Lett

journal_title

Neuroscience letters

authors

Tokimasa T,Simmons MA,Schneider CR,Akasu T

doi

10.1016/0304-3940(96)12495-2

subject

Has Abstract

pub_date

1996-03-29 00:00:00

pages

97-100

issue

2

eissn

0304-3940

issn

1872-7972

pii

0304-3940(96)12495-2

journal_volume

207

pub_type

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